APFIVE Index of Refraction and Wavelength Ratio
A monochromatic light source emits light with wavelength 550 nm in air. This light passes through a thin layer of oil (n = 1.45) floating on water (n = 1.33). What is the ratio of the light’s wavelength in oil to its wavelength in water?
A
0.92
B
1.09
C
1.18
D
0.85
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